Efficient sampling equipment for calf diarrhea pathogen detection

Abstract

The invention relates to the technical field of pathogen detection, in particular to efficient sampling equipment for calf diarrhea pathogen detection, which comprises a sampling rod, one side of the sampling rod is sleeved with a sucking disc, the other side of the sampling rod is sleeved with a connecting disc, the outer surface of the sampling rod is sleeved with a connecting rod, and the top end of the connecting rod is rotatably connected with a lantern ring; a limiting buckle is arranged on one side of the lantern ring; the expansion assembly is embedded into one side of the interior of the sampling rod. Compared with the prior art, the sampling rod is provided with the suction cup, the expansion assembly and the lantern ring, the suction cup, the expansion assembly and the lantern ring are fixed in the calf body, after the expansion assembly is inserted into the anus, the sampling rod is ensured to be stable by adjusting and fixing the position of the expansion piece, and meanwhile the lantern ring is fixed to the tail root and can limit tail swing; the matching of the connecting rod and the rotating ring can ensure that the sampling rod is not interfered by the swing of the tail part, so that passive sampling can be realized, and the accuracy and effectiveness of collection are improved.

Description

Technical Field

[0001] The invention relates to the technical field of pathogen detection, and in particular to a high-efficiency sampling device for detecting pathogens of calf diarrhea. Background Art

[0002] Calf diarrhea has a high morbidity and mortality rate. The causes of calf diarrhea are complex and diverse, including parasitic, viral, bacterial, etc. There are many types of pathogens. The pathogens that cause diarrhea are more serious for calves, and it is not easy to determine the specific cause. In order to confirm the specific cause of calf diarrhea, testers often use fecal pathogen screening methods to examine the pathogens of calf diarrhea and collect calf diarrhea feces for further laboratory diagnosis.

[0003] In the prior art, a Chinese patent document with publication number CN114129192A proposes a rapid sampling device for calf diarrhea pathogen detection. The device has a unique structure and can directly enter the body of a cattle to collect feces without causing damage to the rectum of the calf. At the same time, it can realize continuous sampling and collect feces samples into a simple membrane tube, so that the simple membrane tube forms a multi-section sampling capsule. Moreover, under the action of the simple membrane tube, after the sampling work is completed, the sampling personnel do not need to clean the sampling device, which saves time and effort and improves the sampling efficiency of the sampling personnel. However, this still requires manual operation. For example, a Chinese patent document with publication number CN209695243U proposes an electric sampling device for cattle diarrhea, in which the sample collection tube is connected to the threaded opening at the front end of the sample gun through the external thread at its right end, and a conical cap is provided at the right end of the sample collection tube, and a circular arc structure is provided at the right end of the conical cap, and a central axis is fixedly provided at the left end of the conical cap along the left and right horizontal directions, and a movable spring is provided at the right end of the central axis, and a connecting block is provided at the right end of the piston, and a hanging ring is provided on the connecting block, and the hanging ring is connected to the hook: In summary, the utility model has a simple structure and is easy to operate, and can make it more convenient for staff to collect cattle feces samples, thereby replacing the traditional method of manually collecting cattle and sheep feces sampling;

[0004] Although both of the above two methods can realize the centralized collection of calf feces, we know that when calves have diarrhea, the collection of feces required for testing is often uncontrollable. In order to collect the calf's excrement, the operator cannot achieve real-time "follow-up", so that the samples required for testing cannot be collected in time. The above two collection devices are "active collection" and cannot "passively" collect the involuntary excretion of calves when they have diarrhea. Therefore, the collected specimens cannot accurately represent the overall diarrhea state of the calf, nor can they intuitively reflect the distribution of bacterial species in the calf after testing. Therefore, we disclose an efficient sampling device for calf diarrhea pathogen detection, which adopts a passive method to collect calf diarrhea excrement in real time, thereby improving the accuracy of the test results of bacterial species in the calf. Summary of the invention

[0005] In view of this, the purpose of the present invention is to propose an efficient sampling device for detecting pathogens of calf diarrhea, which has the advantages of improving the accuracy of test results of bacterial species in calves, so as to solve a series of problems such as the inability of the equipment to "passively" collect involuntary excretion of calves during diarrhea.

[0006] Based on the above purpose, the present invention provides an efficient sampling device for calf diarrhea pathogen detection, comprising: a sampling rod, the sampling rod is hollow, one side of the sampling rod is sleeved with a suction cup, the other side of the sampling rod is sleeved with a connecting disk, the outer surface of the sampling rod is sleeved with a connecting rod, the top of the connecting rod is rotatably connected with a collar, and one side of the collar is provided with a limiting buckle; an expansion component, which is embedded and installed on one side of the inner side of the sampling rod, the expansion component includes an upper expansion piece fixedly installed on the inner top surface of the sampling rod and a lower expansion piece rotatably installed below the upper expansion piece, a fixed plate is fixedly installed below the sampling rod and behind the suction cup, one side of the lower expansion piece is fixedly connected with a movable plate, and a groove adapted to the movable plate is provided below the sampling rod; a collecting bag, which is arranged on the other side of the connecting disk, a feeding circular opening adapted to the connecting disk is provided above a side of the collecting bag close to the connecting disk, a liquid discharge port is provided below the collecting bag, and a sealing cover is provided at the position of the liquid discharge port.

[0007] Preferably, a baffle is fixedly installed below one side of the connection plate close to the collecting bag, the baffle is extended inside the collecting bag, and a protective plate protruding upward is also provided on one side of the baffle close to the collecting bag.

[0008] Preferably, return pipe 1 and return pipe 2 are respectively arranged below the connecting plate, a filter net is arranged on one side of return pipe 1, the other sides of return pipe 1 and return pipe 2 pass through the connecting plate and are located behind the suction cup, and return pipe 1 and return pipe 2 are staggered with the expansion component.

[0009] Preferably, a clamping ring is clamped on one side of the collar, a rotating ring is rotatably installed between the collar and the clamping ring, rotating grooves are provided on the opposite surfaces of the collar and the clamping ring, and rotating sheets matching the rotating grooves are provided at both ends of the rotating ring.

[0010] Preferably, the limiting buckle includes a fixed block and an arc block rotatably mounted on the fixed block, a plurality of limiting teeth are provided on the other side of the arc block, an arc groove matching the arc block is provided on the bottom of the limiting buckle, and a paddle is rotatably mounted on one side of the limiting buckle and passes through the arc groove to match the limiting teeth.

[0011] Preferably, the upper expansion piece and the lower expansion piece are arranged opposite to each other, and the upper expansion piece and the lower expansion piece are both arranged in a semicircular arc shape. A slide groove is opened on one side of the movable plate, and a slider is slidably arranged inside the slide groove. A return spring is arranged at the bottom end of the slider, and the other end of the return spring is fixedly connected to the bottom end surface of the slide groove.

[0012] Preferably, a movable limit rod is rotatably installed on a side of the slider away from the slide groove, and the movable limit rod is set in a "U" shape. A square groove is provided on a side of the fixed plate close to the movable plate, and a clamping plate is rotatably installed inside the square groove. The clamping plate passes through the movable plate, and a plurality of limit grooves compatible with the movable limit rod are equidistantly provided below one side of the clamping plate, and the limit grooves are set in an "L" shape.

[0013] Preferably, a fixing ring is fixedly installed at the circular feed opening of the collecting bag, the interior of the fixing ring is hollowed out, a sealed bag body is filled inside the fixing ring, a shrinking ring is provided on one side of the sealed bag body, a draw rope is provided inside the shrinking ring, and both ends of the draw rope are fixedly connected to pull blocks.

[0014] Preferably, the outer periphery of one end of the connecting plate close to the collecting bag, the side of the fixing ring close to the connecting plate and the sides of the two pull-out blocks close to the connecting plate are respectively provided with matching Velcro, and the sides of the two pull-out blocks close to the connecting plate and the side of the fixing ring close to the connecting plate are on the same horizontal plane.

[0015] Preferably, a separation plate is also provided in the middle of the interior of the collecting bag, and two telescopic plates are slidably installed at both ends of the separation plate and connected to the inner wall of the collecting bag, and a number of separation holes are provided on the separation plate and the telescopic plate. The collecting bag is made of degradable material and is telescopically arranged.

[0016] Beneficial effects of the present invention:

[0017] 1. This kind of efficient sampling equipment for calf diarrhea pathogen detection has a suction cup, an expansion component and a collar on the sampling rod, and the expansion component is inserted into the anus of the calf. After the expansion component is inserted into the anus of the calf, it is necessary to adjust the position of the lower expansion piece in the expansion component to fix the sampling rod. When it is expanded to the optimal position, the movable limit rod is pulled to move downward, and the movable limit rod will pull the slider to move downward inside the slide groove, and at the same time squeeze the reset spring, and then the lower part of the movable limit rod is clamped into the corresponding limit groove at the bottom of the card plate for fixing. At this time, the expansion component will be fixed, and the sampling device will be fixed in cooperation with the suction cup. The position of the cow's buttocks, at the same time, after the collar is put on the root of the cow's tail, it is put on the root of the cow's tail through the collar. When in use, the structure of the fixed block and the arc block in the limit buckle allows them to be fixed around the cow's tail. When the cow's tail swings, the swing amplitude of its root is very small. With the use of the expansion component and the suction cup, it is fixed on the cow's buttocks. The sampling rod as a whole is fixedly connected to the rotating ring through the connecting rod, and the rotating ring rotates inside the rotating groove of the collar and the clamp ring through the rotating sheet. Therefore, when the cow's tail swings, the sampling rod will be in place and will not be greatly affected by the swing of the cow's tail, but it can achieve a fixed effect. At this time, you can wait for the calf to have diarrhea and take passive sampling.

[0018] 2. This kind of efficient sampling equipment for calf diarrhea pathogen detection is provided with a collecting bag. Because the collecting bag is retractable, the collecting bag will gradually expand during the collection process, and the expansion will drive the telescopic plates on both sides of the separation plate to move. Therefore, during the collection, solid-liquid separation is achieved through the separation holes on the separation plate and the telescopic plate, so that the detection of the cause of calf diarrhea is more accurate and convenient. After the collection bag is completed, the collecting bag is separated from the connecting plate. During the separation process, the connecting plate is first released from the bonding state with the fixing ring, because the fixing ring is fixed, and on the way of moving the connecting plate, the two ends of the draw rope will be pulled by the pulling block. When the draw rope is gradually tightened, the shrink ring is gradually tightened, thereby sealing the feeding circular mouth position of the collecting bag. At this time, the sampling sample is in the collecting bag and achieves a certain degree of solid-liquid separation effect. Finally, the sample can be inspected; and the collecting bag is made of degradable material and is directly recycled after use, but the sampling rod is a reusable device, which can be reused by simply cleaning it and replacing it with a new collecting bag.

[0019] 3. This kind of high-efficiency sampling equipment for calf diarrhea pathogen detection has a baffle, a reflux pipe 1 and a reflux pipe 2 arranged on the connecting plate. In the process of excrement passing through the sampling rod into the collecting bag, the baffle and the guard plate are combined to perform preliminary filtering and blocking effects on the excrement. Most of the diarrhea will pass through the barrier of the baffle, and only a small part will enter the collecting bag, which helps to ensure that the collected samples are relatively pure and reduce the mixing of external impurities. At the same time, the blocked excrement will be discharged to the outside of the equipment through the reflux pipe 1 and the reflux pipe 2, ensuring the rapid processing and cleaning of the excrement inside the equipment. In addition, if the collecting bag overflows during collection, the reflux pipe 1 and the reflux pipe 2 can also quickly discharge the overflowed excrement to the outside of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the side structure of the present invention;

[0023] Figure 3 For the present invention Figure 2 The enlarged structural diagram at A in the middle;

[0024] Figure 4 This is a schematic diagram of the front structure of the sampling rod of the present invention;

[0025] Figure 5 This is a schematic diagram of the back structure of the sampling rod of the present invention;

[0026] Figure 6 It is a schematic diagram of the ring structure of the present invention;

[0027] Figure 7 It is a schematic diagram of the limit buckle structure of the present invention;

[0028] Figure 8 It is a schematic diagram of the expansion assembly structure of the present invention;

[0029] Fig. 9 This is a schematic diagram of the structure of the collecting bag of the present invention;

[0030] Fig.10 This is a schematic diagram of the unsealed structure of the collection bag mouth of the present invention;

[0031] Fig.11This is a schematic diagram of the sealing structure of the mouth of the collecting bag of the present invention;

[0032] Fig.12 It is a schematic diagram of the separation plate structure of the present invention.

[0033] The markings in the figure are:

[0034] 1. Sampling rod; 2. Suction cup; 3. Connecting plate; 4. Baffle; 5. Reflux pipe 1; 6. Reflux pipe 2; 7. Connecting rod; 8. Ring; 9. Snap ring; 10. Rotating ring; 11. Rotating groove; 12. Rotating sheet; 13. Limit buckle; 14. Arc block; 15. Limit tooth; 16. Pick; 17. Expansion assembly; 18. Fixed plate; 19. Upper expansion sheet; 20. Lower expansion sheet; 21. Movable plate; 22. Slide groove; 23. Sliding block; 24. Reset spring; 25. Movable limit rod; 26. Square groove; 27. Card plate; 28. Limit groove; 29. ​​Collecting bag; 30. Fixed ring; 31. Velcro; 32. Sealing bag body; 33. Shrink ring; 34. Pull block; 35. Draw rope; 36. Separation plate; 37. Telescopic plate. DETAILED DESCRIPTION

[0035] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0036] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0037] like Figures 1 to 12As shown, an efficient sampling device for calf diarrhea pathogen detection includes: a sampling rod 1, which is hollow, a suction cup 2 is sleeved on one side of the sampling rod 1, a connecting plate 3 is sleeved on the other side of the sampling rod 1, a connecting rod 7 is sleeved on the outer surface of the sampling rod 1, a ring 8 is rotatably connected to the top of the connecting rod 7, and a limiting buckle 13 is provided on one side of the ring 8; an expansion component 17, which is embedded and installed on one side of the inner part of the sampling rod 1, the expansion component 17 includes an upper expansion piece 19 fixedly installed on the inner top surface of the sampling rod 1 and a lower expansion piece 20 rotatably installed below the upper expansion piece 19, a fixed plate 18 is fixedly installed below the sampling rod 1 and behind the suction cup 2, a movable plate 21 is fixedly connected to one side of the lower expansion piece 20, and a groove adapted to the movable plate 21 is provided below the sampling rod 1; a collecting bag 29, which is arranged on the other side of the connecting plate 3, and a groove adapted to the connecting plate 21 is provided above the side of the collecting bag 29 close to the connecting plate 3. The disc 3 is adapted to the feeding circular opening, and a liquid discharge port is arranged below the collecting bag 29, and a sealing cover is arranged at the position of the liquid discharge port. When the cattle have diarrhea, the diarrhea time of the cattle cannot be controlled, so passive sampling is required during sampling. When using the device for passive sampling, first install the collecting bag 29 on the connecting disc 3 of the sampling rod 1, and then the ring 8 is put on the root of the cow's tail, and finally fixed with the limit buckle 13. At this time, the expansion component 17 at the front end of the sampling rod 1 is inserted into the anus of the calf, and after insertion, the upper expansion piece 19 and the lower expansion piece 20 are used for expansion operation, and the sampling device is fixed at the position of the cow's buttocks with the suction cup 2. At this time, passive sampling can be waited for when the calf has diarrhea. When the calf has diarrhea, part of the diarrhea will be collected in the collecting bag 29, and this part of the sample can be used for detection, and the excrement of the calf during diarrhea is collected in real time in a passive way, thereby improving the accuracy of the test results of the bacterial species in the calf.

[0038] like Figure 1 , Figure 4 , Figure 5As shown, a baffle 4 is fixedly installed below one side of the connecting plate 3 close to the collecting bag 29, and the baffle 4 is extended inside the collecting bag 29. A guard plate protruding upward is also provided on the side of the baffle 4 close to the collecting bag 29. A reflux pipe 1 5 and a reflux pipe 2 6 are respectively provided below the connecting plate 3, and a filter net is provided on one side of the reflux pipe 1 5. The other sides of the reflux pipe 1 5 and the reflux pipe 2 6 penetrate the connecting plate 3 and are located behind the suction cup 2, and the reflux pipe 1 5 and the reflux pipe 2 6 are staggered with the expansion component 17. In the process of excrement passing through the sampling rod 1 and entering the collecting bag 29, the baffle 4 and the guard plate are combined to perform preliminary filtering and blocking effects on the excrement. Most of the diarrheal matter will pass through the barrier of the baffle 4, and only a small part will pass through. The excrement is divided into the collection bag 29, which helps to ensure that the collected samples are relatively pure and reduces the mixing of external impurities. At the same time, the blocked excrement will be discharged to the outside of the equipment through the reflux pipe 1 5 and the reflux pipe 2 6, ensuring the rapid processing and cleaning of the excrement inside the equipment. In addition, if the collection bag 29 overflows during collection, the reflux pipe 1 5 and the reflux pipe 2 6 can also quickly discharge the overflowed excrement to the outside of the equipment, avoiding the possibility of excrement being retained inside the equipment. In addition, the reflux pipe 1 5 and the reflux pipe 2 6 are located behind the connecting plate 3. This position setting ensures that the excrement can leave the equipment quickly after processing, avoiding the excrement being retained inside the equipment, which is beneficial to the cleaning and hygiene of the equipment.

[0039] like Figure 2 , Figure 6 , Figure 7As shown, a snap ring 9 is clamped on one side of the collar 8, a rotating ring 10 is rotatably installed between the collar 8 and the snap ring 9, a rotating groove 11 is provided on the opposite surfaces of the collar 8 and the snap ring 9, and a rotating piece 12 adapted to the rotating groove 11 is provided at both ends of the rotating ring 10, and a limiting buckle 13 includes a fixed block and an arc block 14 rotatably installed on the fixed block, and a plurality of limiting teeth 15 are provided on the other side of the arc block 14, and an arc groove adapted to the arc block 14 is provided at the bottom of the limiting buckle 13, and a paddle 16 is rotatably installed on one side of the limiting buckle 13 and penetrates the arc groove to adapt to the limiting teeth 15. After the collar 8 is sleeved on the root of the cow's tail, the collar 8 is sleeved on the root of the cow's tail. When in use, the structure of the fixed block and the arc block 14 in the limiting buckle 13 allows them It is fixed around the cow's tail. When fixed, the limiting tooth 15 is meshed with the paddle 16 through the arc groove. The paddle 16 can only move to one side when no external force is received, so it can clamp the limiting tooth 15. At the same time, through the setting of the limiting tooth 15, it can be fine-tuned according to the size of the cow's tail to ensure the reliability and comfort of the fixation. It is worth mentioning that when the cow's tail swings, the swing amplitude of its root is extremely small. With the use of the expansion component 17 and the suction cup 2, it is fixed on the cow's buttocks. The sampling rod 1 is fixedly connected to the rotating ring 10 through the connecting rod 7 as a whole. The rotating ring 10 rotates in the rotating groove 11 of the ring 8 and the retaining ring 9 through the rotating sheet 12. Therefore, when the cow's tail swings, the sampling rod 1 will be in place and will not be greatly affected by the swing of the cow's tail, but can achieve a fixed effect.

[0040] like Figure 2 , Figure 3 , Figure 8As shown, the upper expansion piece 19 and the lower expansion piece 20 are arranged opposite to each other, and the upper expansion piece 19 and the lower expansion piece 20 are arranged in a semicircular arc shape. A slide groove 22 is provided on one side of the movable plate 21, and a slider 23 is slidably arranged inside the slide groove 22. A return spring 24 is arranged at the bottom end of the slider 23, and the other end of the return spring 24 is fixedly connected to the bottom end surface of the slide groove 22. A movable limiting rod 25 is rotatably installed on the side of the slider 23 away from the slide groove 22. The movable limiting rod 25 is arranged in a "U" shape. A square groove 26 is provided on one side of the fixed plate 18 close to the movable plate 21, and a clamping plate 27 is rotatably installed inside the square groove 26. The clamping plate 27 runs through the movable plate 21, and a plurality of limiting grooves 28 compatible with the movable limiting rod 25 are equidistantly provided below one side of the clamping plate 27. The limiting groove 28 is arranged in an "L" shape. After the expansion component 17 is inserted into the anus of the calf, it needs to be adjusted. The sampling rod 1 is fixed by the position of the lower expansion piece 20 in the expansion component 17, which is to pull the movable plate 21 to drive the lower expansion piece 20 to flip downward for expansion. When the movable plate 21 moves, it drives the card plate 27 to rotate and adjust the angle position corresponding to the movable plate 21. At the same time, the upper expansion piece 19 and the lower expansion piece 20 are both semi-circularly arranged, which helps to achieve symmetrical expansion of the expansion pieces, so that they can better adapt to the required expansion space. The semi-circular shape helps to reduce friction and make the expansion process smoother. When it expands to the optimal position, the movable limit rod 25 is pulled downward, and the movable limit rod 25 will pull the slider 23 to move downward in the slide groove 22, while squeezing the reset spring 24, and then the lower part of the movable limit rod 25 is clamped into the corresponding limit groove 28 at the bottom of the card plate 27 for fixation. At this time, the expansion component 17 will be fixed.

[0041] like Figures 9 to 12As shown, a fixing ring 30 is fixedly installed at the feeding circular opening of the collecting bag 29, the interior of the fixing ring 30 is hollowed out, the interior of the fixing ring 30 is filled with a sealing bag body 32, a shrinking ring 33 is arranged on one side of the sealing bag body 32, a pull rope 35 is arranged inside the shrinking ring 33, and both ends of the pull rope 35 are respectively fixedly connected with a pull block 34, and a matching Velcro 31 is respectively arranged on the outer periphery of one end of the connecting disk 3 close to the collecting bag 29, a side of the fixing ring 30 close to the connecting disk 3, and a side of the two pull blocks 34 close to the connecting disk 3. 3 and the side of the fixing ring 30 close to the connecting plate 3 are in the same horizontal plane, and a separation plate 36 is also provided in the middle of the inner part of the collecting bag 29, and two telescopic plates 37 are slidably installed at both ends of the separation plate 36 to connect with the inner wall of the collecting bag 29, and a plurality of separation holes are provided on the separation plate 36 and the telescopic plate 37. The collecting bag 29 is made of a degradable material, and the collecting bag 29 is telescopically arranged. When installing the collecting bag 29, it is only necessary to align the feeding round mouth of the collecting bag 29 with the connecting plate 3, so that the Velcro 31 of the fixing ring 30 and the pull-out block 34 are aligned with the Velcro 31 on the connecting plate 3. 1 is bonded well, and when the collecting bag 29 collects excrement, because the collecting bag 29 is retractable, the collecting bag 29 will gradually expand during the collection process, and the expansion will drive the telescopic plates 37 on both sides of the separation plate 36 to move. Therefore, during the collection, the solid-liquid separation is achieved through the separation holes on the separation plate 36 and the telescopic plate 37, so that the cause of calf diarrhea can be detected more accurately and conveniently. After the collection bag 29 is completed, the collecting bag 29 is separated from the connecting plate 3. During the separation process, the connecting plate 3 is first released from the bonding state with the fixing ring 30, because the fixing ring 30 is fixed, and on the way of moving the connecting disk 3, the two ends of the pull rope 35 will be pulled by the pulling block 34. When the pull rope 35 is gradually tightened, the shrink ring 33 will be gradually tightened, thereby sealing the feeding circular opening position of the collecting bag 29. At this time, the sampling sample is in the collecting bag 29, and a certain degree of solid-liquid separation effect is achieved, and finally the sample can be tested; the collecting bag 29 is made of degradable material and can be directly recycled after use, but the sampling rod 1 is a reusable device, which only needs to be cleaned and replaced with a new collecting bag 29 for reuse.

[0042] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0043] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An efficient sampling device for detecting pathogens of calf diarrhea, characterized in that: include: A sampling rod (1), wherein the sampling rod (1) is hollow, a suction cup (2) is sleeved on one side of the sampling rod (1), a connecting plate (3) is sleeved on the other side of the sampling rod (1), a connecting rod (7) is sleeved on the outer surface of the sampling rod (1), a collar (8) is rotatably connected to the top end of the connecting rod (7), and a limiting buckle (13) is provided on one side of the collar (8); An expansion component (17) is embedded and installed on one side of the interior of the sampling rod (1), and the expansion component (17) comprises an upper expansion piece (19) fixedly installed on the top surface of the interior of the sampling rod (1) and a lower expansion piece (20) rotatably installed below the upper expansion piece (19). A fixed plate (18) is fixedly installed below the sampling rod (1) and behind the suction cup (2). A movable plate (21) is fixedly connected to one side of the lower expansion piece (20), and a groove adapted to the movable plate (21) is provided below the sampling rod (1); A collecting bag (29) is arranged on the other side of the connecting plate (3); a circular inlet port matching the connecting plate (3) is provided above a side of the collecting bag (29) close to the connecting plate (3); a liquid outlet port is provided below the collecting bag (29), and a sealing cover is provided at the position of the liquid outlet port.

2. The efficient sampling device for detecting calf diarrhea pathogens according to claim 1, characterized in that: A baffle (4) is fixedly mounted below one side of the connection plate (3) close to the collection bag (29); the baffle (4) is extended inside the collection bag (29); and a protective plate protruding upward is also provided on one side of the baffle (4) close to the collection bag (29).

3. The efficient sampling device for detecting pathogens of calf diarrhea according to claim 2, characterized in that: A return pipe 1 (5) and a return pipe 2 (6) are respectively arranged below the connection plate (3), a filter screen is arranged on one side of the return pipe 1 (5), the other sides of the return pipe 1 (5) and the return pipe 2 (6) penetrate the connection plate (3) and are located behind the suction cup (2), and the return pipe 1 (5) and the return pipe 2 (6) are arranged in a staggered manner with the expansion component (17).

4. The efficient sampling device for detecting calf diarrhea pathogens according to claim 1, characterized in that: A snap ring (9) is clamped on one side of the sleeve (8), a rotating ring (10) is rotatably installed between the sleeve (8) and the snap ring (9), a rotating groove (11) is provided on the opposite surfaces of the sleeve (8) and the snap ring (9), and rotating sheets (12) adapted to the rotating groove (11) are provided at both ends of the rotating ring (10).

5. The efficient sampling device for detecting pathogens of calf diarrhea according to claim 1, characterized in that: The limiting buckle (13) comprises a fixed block and an arc block (14) rotatably mounted on the fixed block, a plurality of limiting teeth (15) are provided on the other side of the arc block (14), an arc groove matched with the arc block (14) is provided on the bottom of the limiting buckle (13), and a paddle (16) is rotatably mounted on one side of the limiting buckle (13) and passes through the arc groove to match with the limiting teeth (15).

6. The efficient sampling device for detecting calf diarrhea pathogens according to claim 1, characterized in that: The upper expansion piece (19) and the lower expansion piece (20) are arranged opposite to each other, and the upper expansion piece (19) and the lower expansion piece (20) are both arranged in a semicircular arc shape. A slide groove (22) is provided on one side of the movable plate (21), and a slider (23) is slidably arranged inside the slide groove (22). A return spring (24) is arranged at the bottom end of the slider (23), and the other end of the return spring (24) is fixedly connected to the bottom end surface of the slide groove (22).

7. The efficient sampling device for detecting calf diarrhea pathogens according to claim 6, characterized in that: A movable limiting rod (25) is rotatably mounted on a side of the sliding block (23) away from the sliding groove (22), and the movable limiting rod (25) is arranged in a "U" shape. A square groove (26) is provided on a side of the fixed plate (18) close to the movable plate (21), and a clamping plate (27) is rotatably mounted inside the square groove (26). The clamping plate (27) penetrates the movable plate (21), and a plurality of limiting grooves (28) adapted to the movable limiting rod (25) are equidistantly provided below one side of the clamping plate (27), and the limiting grooves (28) are arranged in an "L" shape.

8. The efficient sampling device for detecting pathogens of calf diarrhea according to claim 1, characterized in that: A fixing ring (30) is fixedly installed at the feeding circular opening of the collecting bag (29), the interior of the fixing ring (30) is hollowed out, the interior of the fixing ring (30) is filled with a sealing bag body (32), a shrinking ring (33) is arranged on one side of the sealing bag body (32), a drawstring (35) is arranged inside the shrinking ring (33), and both ends of the drawstring (35) are respectively fixedly connected to a pulling block (34).

9. The efficient sampling device for detecting pathogens of calf diarrhea according to claim 8, characterized in that: The outer periphery of one end of the connecting disk (3) close to the collecting bag (29), the side of the fixing ring (30) close to the connecting disk (3) and the sides of the two pull-out blocks (34) close to the connecting disk (3) are respectively provided with matching Velcro (31), and the sides of the two pull-out blocks (34) close to the connecting disk (3) and the side of the fixing ring (30) close to the connecting disk (3) are on the same horizontal plane.

10. The efficient sampling device for detecting pathogens of calf diarrhea according to claim 9, characterized in that: A separation plate (36) is also provided in the middle of the interior of the collection bag (29), and two telescopic plates (37) are slidably mounted at both ends of the separation plate (36) and connected to the inner wall of the collection bag (29), and a plurality of separation holes are provided on the separation plate (36) and the telescopic plate (37). The collection bag (29) is made of a degradable material, and the collection bag (29) is telescopically arranged.

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